The best thing would be to consult an offset calculator like this to compare stock to what you are proposing. Also you if you want a square set up, to make it look like OEM set up, you would need to have spacers in the back. I would aim to have the end result be as close to stock as possible if I was you. Both because I'm not into the hella flush look, but also, its even worse for winter tires since having tires pushed out too far means more crap on the sides of you car in bad weather.